PA.RT 3, 1912] AE;cIDIACEAB 197 



III. Telia caulicolous, from a perennial mycelium which often dwarfs the young shoots 

 and causes bird's-nest distortions, usually causing a reversion of the leaves to the juvenile 

 form, sometimes appearing on isolated areas on the larger branches and producing gradual 

 enlargements, solitary or rarely confluent, of variable shape and size, roundish to oval on 

 the young shoots, 1-2 mm. across, oval to narrowly elliptical on the woody branches, 1.5-3 

 mm. wide by 2-7 mm. long, pulvinate and low when young, later becoming hemispherical, 

 dark reddish-brown becoming yellowish by germination, ruptured epidermal tissues very 

 conspicuous; teliospores two-celled, ellipsoid, 16-23 by 39-55 //, rounded or somewhat nar- 

 rowed both above and below ; wall pale cinnamon -brown, rather thin, 1-1.5 /^, very slightly 

 thicker above, the pores one in a cell, apical; pedicel cylindrical, mostly uniform, 4-7 fi 

 in diameter, very long. 



On Juntperaceae : 



Juniperus virginiana I,. {Sabina virginiana Ant.), Alabama, Connecticut, Delaware, 

 District of Columbia, Florida, Georgia, Illinois, Iowa, Maryland, Massachusetts, Missis- 

 sippi, New Jersey, North Carolina, South Carolina, Vermont, Virginia. 

 Type locality: Connecticut, on Juniperus virgimana . 



Distribution: Massachusetts west to "Wisconsin and Iowa, south to Florida and Mississippi. 



Illustrations: Bot. G^.A9:pL22,f. /(?; Bull. N. Y. Bot. Gard.7: A5^,f. 18; pi. 157~f.54,55. 



ExsicCATi : Rab.-Wint. Fungi Eur. 2923 ; Ellis, N. Am. Fun&i lOSdc, 1083b; Ellis & Ev. N. 



Am. Fungi 3145; Ellis & Ev. Fungi Columb. 1623 ; Seym. & Earle, Econ. Fungi 239, 240; 



Kellerm. Ohio Fungi 185 ; Rav. Fungi Am. 791; Rav. Fungi Car. 5 : 87. 



15. Gymnosporangium germinale (Schw.) Kern, Bull. Torrey 



Club 35: 506. 1908. 



Caeoma ( Pertdermium) germinale Schw. Trans. Am. Phil. Soc. II. 4 : 294. 1832. 



Peridermium {Caeoma) germinale Schw. Trans. Am. Phil. Soc. 11. 4: 310. 1832. 



Podisoma Gymnosporangium clavipes Cooke & Peck; Cooke, Jour. Quek. Club 2 : 267. 1871. 



Gymnosporangium, clavipes Cooke & Peck; Peck, Ann. Rep. N. Y. State Mus. 25: 89. 1873. 



Roestelia auraniiaca Peck, Bull. Buffalo Soc. Nat. Sci. 1 : 68. 1873. 



Puccinia clavipes Kuntze, Rev. Gen. 3^ : 507. 1898. 



Tremella clavipes Arth. Proc. Ind. Acad. Sci. 1900 : 135. 1901. 



Aecidium aurantiacum Farl. Bibl. Index 1 : 19. 1905. Not A. aurantiacum, Bon. 1860. 



Aecidium germinale Arth. Result. Sci. Congr. Bot. Vienne 343. 1906. 



0. Pycnia chiefly fructicolous, gregarious, in irregular groups on slightly hypertrophied 

 areas occupying part or all of the surface, prominent, conspicuous, honey-yellow becoming 

 blackish, slightly flattened-globose, large, 160-270 ^ in diameter by 150-230 // high ; ostiolar 



filaments 90-150// long. 



1. Aecia fructicolous and caulicolous, crowded on hypertrophied areas of variable size 

 on the twigs and peduncles, occupying part or usually all of the surface on the fruits, cyl- 

 indric, 1.5-3 mm. high by 0.3-0.5 mm. in diameter ; peridium whitish, becoming coarsely 

 lacerate sometimes to base, erect or spreading ; peridial cells seen in both face and side 

 views, not hygroscopic, remaining straight when wet, polygonal-ovate or polygonal -oblong 

 in face view, 19-39 by 45-95 /i, rhomboidal in side view, 25-40^ thick, the outer wall 

 moderately thick, 3-5 fi, smooth, the inner wall very thick, 13-23 /i, coarsely verrucose with 

 rather loosely set, large, very irregularly branched papillae, the side walls verrucose on the 

 inner half similar to the inner wall ; aeciospores globoid, large, 21-32 by 24-39 /z; wall 

 pale-yellow, thick, 3-4.5^, rather coarsely verrucose with crowded, slightly irregular papillae, 

 sometimes appearing reticulate, the pores 6-10, scattered, very obscure. 



On Malaceae : . ^ „ , . . ^^ v ^ x- ^ ti^ - 



Amelanchier canadensis (L.) Medic. {A. Botryaptum DC), Connecticut, Maine, New 



York ; Newfoundland; Ontario, Quebec. 

 Amelanchier erecta Blanchard, Michigan. . ^^ ^ ,. . ,^ t. .^ 



Amelanchier intermedia Spach {A. Boiryaptum Hook, not DC), Maine, Massachusetts, 



Michigan, New York; New Brunswick. 

 Amelanchier oligocarpa (Michx.) Roem., Quebec. 



Amelanchier oblongifolia (T. & G.) Roem., Maine, Massachusetts, Michigan, Wisconsin. 

 Amelanchier rotundifolia (Michx.) Roem., Ontario. 

 Aronia arbutifolia (L,) KH., Maine, Massachusetts ; New Brunswick. 



Aroma atropurpurea'^r\:^ou,yi^\n^. , a .-^ /■ ^ tvt ■ 



Aronia nwnsirosa Zabel {Sorbus amertcana x Aroma arbutifoha), Maine. 



Aronia nigra (Willd.) Britton, Maine ; Ontario. . 



Choenomeles japonica (Thunb.) Lindl. {Cydoma japomca Pers.), New Jersey. 



Crataegus colojiica Beadle, South CaroHna. . ,, ^ , ,^ -,.4.^ t*t- • •^«- 



Craiafgus Crus-galli L., Connecticut, Georgia, Kentucky, Massachusetts, Mississippi, 

 North Carolina, Ohio, Pennsylvania, Virginia. 



